<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>集团火电机组冷端优化系统</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        :root {
            --primary-bg: #0f172a;
            --secondary-bg: #1e293b;
            --card-bg: #1a2435;
            --accent: #5eead4;
            --accent-hover: #88f3e2;
            --text-primary: #e2e8f0;
            --text-secondary: #94a3b8;
            --text-tertiary: #64748b;
            --border-color: #334155;
            --font-main: 'Segoe UI', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.3);
            --shadow-accent: 0 0 8px rgba(94, 234, 212, 0.3);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            background: var(--primary-bg);
            color: var(--text-primary);
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.6;
            min-height: 100vh;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(30, 41, 59, 0.6) 0%, transparent 25%),
                radial-gradient(circle at 90% 80%, rgba(94, 234, 212, 0.08) 0%, transparent 25%);
            overflow-x: hidden;
        }
        
        /* 科技背景装饰 */
        .tech-pattern {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            pointer-events: none;
            opacity: 0.03;
            background-image: 
                linear-gradient(rgba(94, 234, 212, 0.5) 1px, transparent 1px),
                linear-gradient(90deg, rgba(94, 234, 212, 0.5) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: -1;
        }
        
        /* 流动线条特效 */
        .flow-lines {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: -1;
            pointer-events: none;
        }
        
        .flow-line {
            position: absolute;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.1;
            animation: flow 15s infinite linear;
        }
        
        @keyframes flow {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100vw); }
        }
        
        /* 导航栏 */
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-lg) var(--spacing-xl);
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(5px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }
        
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-bg);
            font-size: 1.2rem;
        }
        
        .logo-text {
            font-size: 1.4rem;
            font-weight: 600;
        }
        
        .nav-links {
            display: flex;
            gap: var(--spacing-xl);
        }
        
        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
        }
        
        .nav-link:hover {
            color: var(--accent);
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s;
        }
        
        .nav-link:hover::after {
            width: 100%;
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        .nav-actions {
            display: flex;
            gap: var(--spacing-md);
        }
        
        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-sm);
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            font-family: var(--font-main);
            font-size: 1rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            gap: 8px;
        }
        
        .btn-primary {
            background: rgba(94, 234, 212, 0.2);
            color: #ffffff;
            border: 1px solid rgba(94, 234, 212, 0.4);
            text-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
        }
        
        .btn-primary:hover {
            background: rgba(94, 234, 212, 0.3);
            box-shadow: var(--shadow-accent);
        }
        
        .btn-secondary {
            background: rgba(148, 163, 184, 0.15);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }
        
        .btn-secondary:hover {
            background: rgba(148, 163, 184, 0.25);
            color: #ffffff;
        }
        
        /* 英雄区域 */
        .hero {
            padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-xxl);
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }
        
        .hero h1 {
            font-size: 3rem;
            margin-bottom: var(--spacing-md);
            background: linear-gradient(to right, var(--text-primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        
        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 800px;
            margin: 0 auto var(--spacing-xl);
            line-height: 1.7;
        }
        
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }
        
        .hero-btn {
            padding: var(--spacing-md) var(--spacing-xl);
            font-size: 1.1rem;
        }
        
        /* 核心功能区域 */
        .features {
            padding: var(--spacing-xxl) var(--spacing-xl);
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xxl);
        }
        
        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: var(--spacing-sm);
            position: relative;
            display: inline-block;
        }
        
        .section-header h2::after {
            content: '';
            display: block;
            width: 80px;
            height: 3px;
            background: var(--accent);
            margin: var(--spacing-sm) auto;
            border-radius: 2px;
            opacity: 0.7;
        }
        
        .section-header p {
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.1rem;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: var(--spacing-xl);
        }
        
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(94, 234, 212, 0.3);
        }
        
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0.7;
        }
        
        .feature-icon {
            width: 70px;
            height: 70px;
            background: rgba(94, 234, 212, 0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-xl);
        }
        
        .feature-icon i {
            font-size: 2rem;
            color: var(--accent);
        }
        
        .feature-content h3 {
            font-size: 1.5rem;
            margin-bottom: var(--spacing-md);
            color: var(--accent);
        }
        
        .feature-content p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-lg);
            flex-grow: 1;
        }
        
        .feature-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
        }
        
        .stat-item {
            background: rgba(26, 36, 53, 0.5);
            padding: var(--spacing-md);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
        }
        
        .stat-value {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: var(--spacing-xs);
        }
        
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-tertiary);
        }
        
        /* 服务区域 */
        .services {
            padding: var(--spacing-xxl) var(--spacing-xl);
            max-width: 1200px;
            margin: 0 auto;
            background: rgba(26, 36, 53, 0.3);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: var(--spacing-xxl);
        }
        
        .services-content {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xl);
        }
        
        .services-info {
            flex: 1;
            min-width: 300px;
        }
        
        .services-info h2 {
            font-size: 2rem;
            margin-bottom: var(--spacing-lg);
            color: var(--accent);
        }
        
        .services-info p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-xl);
            line-height: 1.7;
        }
        
        .contact-info {
            margin-top: var(--spacing-xl);
        }
        
        .contact-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-lg);
        }
        
        .contact-icon {
            width: 40px;
            height: 40px;
            background: rgba(94, 234, 212, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }
        
        .contact-details h4 {
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }
        
        .contact-details p {
            color: var(--text-secondary);
            margin: 0;
        }
        
        .services-form {
            flex: 1;
            min-width: 300px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-md);
        }
        
        .services-form h3 {
            font-size: 1.5rem;
            margin-bottom: var(--spacing-lg);
            color: var(--accent);
        }
        
        .form-group {
            margin-bottom: var(--spacing-lg);
        }
        
        .form-group label {
            display: block;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
            font-weight: 500;
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: var(--spacing-md);
            background: rgba(26, 36, 53, 0.7);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-family: var(--font-main);
            transition: all 0.3s ease;
        }
        
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(94, 234, 212, 0.1);
        }
        
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        
        /* 页脚 */
        footer {
            background: rgba(15, 23, 42, 0.9);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl);
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-xl);
        }
        
        .footer-section h3 {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-lg);
            color: var(--accent);
        }
        
        .footer-section p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
        }
        
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        
        .footer-link {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-link:hover {
            color: var(--accent);
        }
        
        .copyright {
            text-align: center;
            padding: var(--spacing-xl) 0 0;
            color: var(--text-tertiary);
            font-size: 0.9rem;
            border-top: 1px solid var(--border-color);
            margin-top: var(--spacing-xl);
        }
        
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                gap: var(--spacing-md);
            }
            
            .nav-links {
                flex-wrap: wrap;
                justify-content: center;
                gap: var(--spacing-md);
            }
            
            .hero h1 {
                font-size: 2.2rem;
            }
            
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .feature-stats {
                grid-template-columns: 1fr;
            }
            
            .services-content {
                flex-direction: column;
            }
        }
    </style>
</head>
<body>
    <div class="tech-pattern"></div>
    <div class="flow-lines" id="flowLines"></div>
    
    <!-- 导航栏 -->
    <nav class="navbar">
        <div class="logo">
            <div class="logo-icon">
                <i class="fas fa-bolt"></i>
            </div>
            <div class="logo-text">冷端优化系统</div>
        </div>
        
        <div class="nav-links">
            <a href="#" class="nav-link">首页</a>
            <a href="#" class="nav-link">解决方案</a>
            <a href="#" class="nav-link">案例研究</a>
            <a href="#" class="nav-link">技术支持</a>
        </div>
        
        <div class="nav-actions">
            <a href="login.html" class="btn btn-primary">
                <i class="fas fa-sign-in-alt"></i> 系统登录
            </a>
        </div>
    </nav>
    
    <!-- 英雄区域 -->
    <section class="hero">
        <h1>智能冷端优化系统</h1>
        <p>基于大数据分析和人工智能技术，为火电机组提供全面的冷端优化解决方案，提高机组效率，降低能耗，保障安全运行</p>
        
        <div class="hero-actions">
            <a href="#services" class="btn btn-primary hero-btn">
                <i class="fas fa-comments"></i> 咨询服务
            </a>
            <a href="#features" class="btn btn-secondary hero-btn">
                <i class="fas fa-cogs"></i> 核心功能
            </a>
        </div>
    </section>
    
    <!-- 核心功能区域 -->
    <section class="features" id="features">
        <div class="section-header">
            <h2>核心优化算法</h2>
            <p>三大核心算法助力火电机组实现高效、安全、经济的冷端运行</p>
        </div>
        
        <div class="features-grid">
            <!-- 背压优化 -->
            <div class="feature-card">
                <div class="feature-icon">
                    <i class="fas fa-tachometer-alt"></i>
                </div>
                <div class="feature-content">
                    <h3>背压优化算法</h3>
                    <p>通过实时分析机组运行数据，智能计算最优背压区间，平衡能耗与经济性，最大化机组净功率输出。</p>
                    
                    <div class="feature-stats">
                        <div class="stat-item">
                            <div class="stat-value">5-15%</div>
                            <div class="stat-label">能耗降低</div>
                        </div>
                        <div class="stat-item">
                            <div class="stat-value">2-7%</div>
                            <div class="stat-label">净功率提升</div>
                        </div>
                    </div>
                    
                    <a href="/back-pressure-optimization" class="btn btn-secondary">
                        <i class="fas fa-arrow-right"></i> 了解更多
                    </a>
                </div>
            </div>
            
            <!-- 散热片清洁 -->
            <div class="feature-card">
                <div class="feature-icon">
                    <i class="fas fa-wind"></i>
                </div>
                <div class="feature-content">
                    <h3>散热片清洁算法</h3>
                    <p>基于热力学模型和机器学习，评估散热片积灰程度，提供精准的清洁建议，确保热交换效率最大化。</p>
                    
                    <div class="feature-stats">
                        <div class="stat-item">
                            <div class="stat-value">15-30%</div>
                            <div class="stat-label">热效率提升</div>
                        </div>
                        <div class="stat-item">
                            <div class="stat-value">20%</div>
                            <div class="stat-label">清洁成本降低</div>
                        </div>
                    </div>
                    
                    <a href="/radiator-fouling-monitor" class="btn btn-secondary">
                        <i class="fas fa-arrow-right"></i> 了解更多
                    </a>
                </div>
            </div>
            
            <!-- 冬季防冻 -->
            <div class="feature-card">
                <div class="feature-icon">
                    <i class="fas fa-snowflake"></i>
                </div>
                <div class="feature-content">
                    <h3>冬季防冻算法</h3>
                    <p>智能预测低温环境下冷端系统冻结风险，提供安全与经济兼顾的防冻策略，保障机组在严寒条件下的稳定运行。</p>
                    
                    <div class="feature-stats">
                        <div class="stat-item">
                            <div class="stat-value">99.8%</div>
                            <div class="stat-label">安全运行率</div>
                        </div>
                        <div class="stat-item">
                            <div class="stat-value">30-50%</div>
                            <div class="stat-label">防冻能耗降低</div>
                        </div>
                    </div>
                    
                    <a href="/winterization-decision" class="btn btn-secondary">
                        <i class="fas fa-arrow-right"></i> 了解更多
                    </a>
                </div>
            </div>
        </div>
    </section>
    
    <!-- 服务与联系方式 -->
    <section class="services" id="services">
        <div class="services-content">
            <div class="services-info">
                <h2>专业咨询服务</h2>
                <p>我们的专家团队提供定制化的火电机组冷端优化解决方案，从系统评估到实施部署，全程为您保驾护航。</p>
                
                <div class="contact-info">
                    <div class="contact-item">
                        <div class="contact-icon">
                            <i class="fas fa-phone"></i>
                        </div>
                        <div class="contact-details">
                            <h4>电话咨询</h4>
                            <p>400-123-4567</p>
                        </div>
                    </div>
                    
                    <div class="contact-item">
                        <div class="contact-icon">
                            <i class="fas fa-envelope"></i>
                        </div>
                        <div class="contact-details">
                            <h4>电子邮件</h4>
                            <p>support@coldend-opt.com</p>
                        </div>
                    </div>
                    
                    <div class="contact-item">
                        <div class="contact-icon">
                            <i class="fas fa-map-marker-alt"></i>
                        </div>
                        <div class="contact-details">
                            <h4>公司地址</h4>
                            <p>北京市海淀区科技园区88号能源大厦A座</p>
                        </div>
                    </div>
                </div>
            </div>
            
            <div class="services-form">
                <h3>立即咨询我们的专家</h3>
                <form id="consultForm">
                    <div class="form-group">
                        <label for="name">您的姓名</label>
                        <input type="text" id="name" required>
                    </div>
                    
                    <div class="form-group">
                        <label for="email">电子邮箱</label>
                        <input type="email" id="email" required>
                    </div>
                    
                    <div class="form-group">
                        <label for="phone">联系电话</label>
                        <input type="tel" id="phone" required>
                    </div>
                    
                    <div class="form-group">
                        <label for="message">咨询内容</label>
                        <textarea id="message" required></textarea>
                    </div>
                    
                    <button type="submit" class="btn btn-primary">
                        <i class="fas fa-paper-plane"></i> 提交咨询
                    </button>
                </form>
            </div>
        </div>
    </section>
    
    <!-- 页脚 -->
    <footer>
        <div class="footer-content">
            <div class="footer-section">
                <h3>关于我们</h3>
                <p>冷端优化科技有限公司专注于火电机组冷端系统优化解决方案，通过先进的数据分析和AI技术，帮助电厂实现节能减排目标。</p>
            </div>
            
            <div class="footer-section">
                <h3>快速链接</h3>
                <div class="footer-links">
                    <a href="#" class="footer-link">首页</a>
                    <a href="#" class="footer-link">解决方案</a>
                    <a href="#" class="footer-link">成功案例</a>
                    <a href="/login" class="footer-link">系统登录</a>
                </div>
            </div>
            
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